@misc{hoppe_on_the_2009, 
author={Hoppe, A.},
title={On the Feasibility of Joining Polymer and Metal with the New Friction Spot Joining Technique (Bachelorarbeit)},
year={2009},
howpublished = {bachelor thesis: TU Hamburg-Harburg, FB Maschinenbau},
note = {Online available at: \url{} (DOI). Hoppe, A.: On the Feasibility of Joining Polymer and Metal with the New Friction Spot Joining Technique (Bachelorarbeit). TU Hamburg-Harburg, FB Maschinenbau, 2009.}}